1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This test uses new symbols that were not defined in the libc++ shipped on 11 // darwin11 and darwin12: 12 // XFAIL: with_system_lib=x86_64-apple-darwin11 13 // XFAIL: with_system_lib=x86_64-apple-darwin12 14 15 // <memory> 16 17 // shared_ptr 18 19 // template <class T> 20 // shared_ptr<T> 21 // atomic_exchange_explicit(shared_ptr<T>* p, shared_ptr<T> r) 22 23 #include <memory> 24 #include <cassert> 25 26 int main() 27 { 28 #if __has_feature(cxx_atomic) 29 { 30 std::shared_ptr<int> p(new int(4)); 31 std::shared_ptr<int> r(new int(3)); 32 r = std::atomic_exchange_explicit(&p, r, std::memory_order_seq_cst); 33 assert(*p == 3); 34 assert(*r == 4); 35 } 36 #endif 37 } 38
